Hinge



J. G. KEARSING. HINGE.

Patented Deo. 15, 1891.`

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JOHN G. KEARSING, OF NEVARK, NEV JERSEY.

HINGE.

SPECIFICATION forming part of Letters Patent No. 465,112, dated December 15, 1891.

Application led February 2l, 1891. Serial No. 382,281. (Model.)

To all whom t 'may concern.:

Be it known that I, JOHN G. KEARSING, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Hinges; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which forni a part of this specification.

The object of this invention is to avoid the necessity of having the hinge project outside of the surface of the wood and to secure other advantageous results, hereinafter referred to.

The invention consists in the improved hinge and in the combination and arrangements of the several parts thereof, as herein set forth, and finally pointed out in the claim.

Referring to the accompanying drawings, in which similar letters of reference indicate corresponding parts in each of the several figures Where they occur, Figure l represents a plan vview of my improved hinge, the leaves thereof being open. Fig. 2 represents the saine with the leaves closed. Fig. 3 is a transverse section taken through line :r of Fig. 2. Fig.v Ll is a rear end view showing a inodificatiomand Fig. 5 is a section through line yy of Fig. 2.

In said drawings, A indicates the leaf intended to be secured to the door.

B indicates the adjoining leaf, which is arranged to slide upon a plate C, which is firmly secured to the door frame or casing.

d, e, and f indicate a train of connectinggears and pinion, one of which, the pinion d, is carried by the leaf A and is fixed thereto. rlhe two gears e and fare carried bythe leaf B and rotaie upon their respective axles, the lower onef engaging with a rack c, carried by the plate C in a depression g' therein, as

will be understood upon reference to Fig. 3.

The leaf B slides in a recess formed in the plate C, the extremities or sides of which are undercut, as at a, to correspond With the beveled edges` of the loaf B, as clearly indicated in Fig. 5, whereby said leaf is held in position upon said plate. If preferred, however, said leaf may be provided with dovetailed tongues e to work in corresponding ways or grooves e2 in the plate C, as indicated in Fig. 4, or any other appropriate arrangement may be substituted t-o subserve the de sred purpose.

It Will be observed and understood that when the hinge or leaves are closed the back or joint portion of the hinge will be flush With the outer surface of the Wood-Work, which is very importantin fine cabinet-Work, and especially when applied t-o a piano or an organ, as outwardly-projecting hinges are very apt to cut, and do cut and defaceor ruin the covers in many cases, and are unsightly.

The operation is as follows: As a door or lid is opened the pinion d, being xed to the leaf A, causes the gears c and f to revolve on their axles in the direction Vindicated by the arrows, the result of Which, owing to the rack, is to move the hinge proper outward and thereby give the needed clearance to the door when opened Wide, as will be understood upon reference to Fig. 1. As the door or lid is being'closed, the hinge gradually resumes its normal position,as indicated in Figs. 2 and 3,

as will be obvious.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent., is- I The improved hinge consisting of a grooved plate C, provided with a rack, a hinge plate or lea-f B, adapted to slide on the plate C and carrying the intermeshing gears e and f, the latter adapted to gear with said rack, and the leaf A, articulated or jointed directly t0 the leaf B after the manner of the leaves of an ordinary hinge and carrying a pinion adapted to mesh with the gear e, substantially as set forth.

In testimony1 that I claim the foregoing I have hereunto set my hand this 17th day of February, 1891.

JonN e. KEARSING.

Witnesses:

CHARLES H. PELL, OSCAR A. MICHEL. 

